Summary
Updated Aug 31, 2026
Michael R. Kenison is Chief Operations Officer of Proto Labs Inc (PRLB). 8 SEC Form 4 filings on record going back to 2025, most recently on 13 May 2026. Most recent open-market trade: sold $467K of PRLB on 13 May 2026. Lifetime open-market sales: $2.29M.
Recent Transactions
20Every recent SEC Form 4 transaction Michael R. Kenison has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Michael R. Kenison go back to 2025: 8 primary Form 4 filings, an average of 4.0 per year. 26 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Michael R. Kenison files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Sven Wehrwein - $155K of PRLB open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Michael R. Kenison?
Michael R. Kenison is a corporate insider, tracked as Chief Operations Officer of Proto Labs Inc (PRLB). InsiderAlpha holds 8 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Michael R. Kenison last file a Form 4?
The most recent primary Form 4 on record is dated 13 May 2026, one of 8 filings going back to 2025.
Has Michael R. Kenison been buying or selling stock?
Recorded transactions: 0 open-market purchases and 9 open-market sales ($2.29M) across all tracked filings.
Where can I see all of Michael R. Kenison's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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